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3 years ago

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Air contains Nitrogen, Oxygen and Carbon Dioxide gases, all retaining their individual, distinct chemical properties. Air is the

refore best described as a(n) _______. a. mixture c. solution b. compound d. ion

2 answers:

jonny [76]3 years ago

4 0

Mixture is correct answer

Scilla [17]3 years ago

3 0

I think it is A, mixture because it is composed of many gases and elements.

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What is this plzzzzzzzzzzzzzzzzzzz help!!!!

motikmotik

Answer:

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3 years ago

140000 rounded to 3 sig gigs

attashe74 [19]

1.40E+5 (140000)
I believe this is right

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3 years ago

Which of the following best describes a mixture in which ionic compounds are dissociated in solution?

Ierofanga [76]

Ion solution is correct. hope it helps

6 0

3 years ago

Read 2 more answers

Baking soda and antacid tablets are examples of two common__________

attashe74 [19]

Bases

A base is a substance that dissociates into more hydroxide ions (-OH-) when dissolved in water. Bases are also good proton acceptors. Bases, therefore, reduce the number of H+ and increase OH- hence raising the pH of the solution.

B(aq) + H₂O(l) ⇌ BH⁺(aq) + OH⁻(aq)

Explanation:

Other properties of bases is that they are bitter to the taste and they feel slippery when touched. Strong bases are nonthlese very corrosive like acids. Bases turn red litmus paper blue. Most alkali hydroxides such as NaOH are bases.

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brainly.com/question/12574229

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7 0

3 years ago

The forensic technician at a crime scene has just prepared a luminol stock solution by adding 13.0 g of luminol into a total vol

Andrews [41]

Answer:

0.978 M

Explanation:

Given data

Mass of luminol (solute): 13.0 g

Volume of the solution = volume of water: 75.0 mL = 0.0750 L

We can find the molarity of the stock solution of luminol using the following expression.

M = mass of solute / molar mass of solute × liters of solution

M = 13.0 g / 177.16 g/mol × 0.0750 L

M = 0.978 M

3 0

3 years ago